20.1-20.3

Question 1

largest and most diverse group of animals

Answer 1

invertebrates

Question 2

animals without backbones

Answer 2

invertebrates

Question 3

invertebrates with jointed apendages

Answer 3

arthropods

Question 4

external skeleton

Answer 4

exoskeleton (found in arthropods)

Question 5

most varied and numerous of all God’s living creatures

Answer 5

insects (more than 70% of all animals species)

Question 6

scientists who study insects

Answer 6

entomologists

Question 7

three regions of insects

Answer 7

head, thorax, and abdomen

Question 8

process by which insects mature

Answer 8

metamorphosis

Question 9

insect begins life as an egg that hatches into a nymph (immature form of the insect that looks much like the adult but different body proportions and lacks wings)

Answer 9

incomplete metamorphosis

Question 10

egg develops into larva (worm-like eating and growing stage), then forms cocoon or chrysalis and enters resting stage of its life as a pupa before becoming the adult insect

Answer 10

complete metamorphosis

Question 11

one of the most common and most familiar insects

Answer 11

grasshopper

Question 12

eyes that detect only light and shadow

Answer 12

simple eyes

Question 13

eyes that are sensitive to shape, color, and movement

Answer 13

compound eyes

Question 14

components of an insect’s mouth

Answer 14

mouthparts

Question 15

portion of an insect’s body with legs and wings attached that acts as the locomotion center

Answer 15

thorax

Question 16

respiratory openings

Answer 16

spiracles

Question 17

_____ do not have a closed system of blood vessels like mammals and humans

Answer 17

insects

Question 18

egg-laying portion of an insect

Answer 18

ovipositor

Question 19

straight wing

Answer 19

orthoptera

Question 20

crickets, grasshoppers, locusts, mantises, and roaches are _____

Answer 20

orthoptera

Question 21

toothed insects

Answer 21

odonata

Question 22

dragonflies and damselflies are _____

Answer 22

odonata

Question 23

half wings

Answer 23

hemiptera

Question 24

order that consists of true bugs

Answer 24

hemiptera

Question 25

bedbug, chinch bug, squash bug, and stinkbug

Answer 25

hemiptera

Question 26

same wings

Answer 26

homoptera

Question 27

cicada, scale insects, plant lice, mealybugs, and leafhoppers

Answer 27

homoptera

Question 28

scale wings

Answer 28

lepidoptera

Question 29

butterflies and moths

Answer 29

lepidoptera

Question 30

two winged insects

Answer 30

diptera

Question 31

fly, gnat, mosquito

Answer 31

diptera

Question 32

sheath-winged insects

Answer 32

coleoptera

Question 33

beetle, firefly, and ladybug

Answer 33

coleoptera

Question 34

membrane-winged insects

Answer 34

hymenoptera

Question 35

social insects

Answer 35

hymenoptera

Question 36

ant, bee, wasp

Answer 36

hymenoptera

Question 37

egg-laying female bee

Answer 37

queen

Question 38

non-egg-laying female bees

Answer 38

workers

Question 39

male bees

Answer 39

drones

Question 40

true or false: honeybee colonies only have one queen

Answer 40

true

Question 41

true or false: ant colonies have only one queen

Answer 41

false; they can have more than one

Question 42

small, insect-like arthropods

Answer 42

arachnids

Question 43

two body regions of spiders

Answer 43

cephalothorax and abdomen

Question 44

waist of a spider

Answer 44

pedicel

Question 45

short appendages of a spider that are used to seize and kill or crush its prey

Answer 45

chelicerae

Question 46

appendages of a spider used to crush and cut the prey

Answer 46

pedipalps

Question 47

spider circulatory system

Answer 47

open circulatory system

Question 48

part of a spider respiratory system

Answer 48

book lung

Question 49

organs that spiders use to spin silk

Answer 49

spinnerets

Question 50

look like spiders but are not

Answer 50

daddy longlegs (harvestmen)

Question 51

2 legs per body segment

Answer 51

centipede

Question 52

4 legs per body segment

Answer 52

millipedes

Question 53

arachnids mostly active at night that are found in temperate and tropical climates and have a long, segmented abdomen with a stinger

Answer 53

scorpions

Question 54

parasitic arachnids

Answer 54

mites (cause red, itchy skin) and ticks (transmit disease)